768004488521 has 2 divisors, whose sum is σ = 768004488522. Its totient is φ = 768004488520.

The previous prime is 768004488497. The next prime is 768004488529. The reversal of 768004488521 is 125884400867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 728737102921 + 39267385600 = 853661^2 + 198160^2 .

It is a cyclic number.

It is not a de Polignac number, because 768004488521 - 2¹⁸ = 768004226377 is a prime.

It is not a weakly prime, because it can be changed into another prime (768004488529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384002244260 + 384002244261.

It is an arithmetic number, because the mean of its divisors is an integer number (384002244261).

Almost surely, 2^768004488521 is an apocalyptic number.

It is an amenable number.

768004488521 is a deficient number, since it is larger than the sum of its proper divisors (1).

768004488521 is an equidigital number, since it uses as much as digits as its factorization.

768004488521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 768004488521 in words is "seven hundred sixty-eight billion, four million, four hundred eighty-eight thousand, five hundred twenty-one".